...until at length we get such rates of vibration as our retina is constructed for, and we are satisfied. We want a small range of rapid vibrations, and we...key and every pedal, and to blow a young hurricane. " I have purposely selected as examples the more perfect methods of obtaining artificial light, wherein...

...constructed for, and we are satisfied. But how wasteful and indirect and empirical is the process. We want a small range of rapid vibrations, and we...key and every pedal, and to blow a young hurricane. s 150. I have purposely selected as examples the more perfect methods of obtaining artificial light,...

...but simply superpose the higher upon the lower; hence the lower vibrations are wasted. "It is as if, in order to sound some little shrill octave of pipes...an organ, we were obliged to depress every key and pedal, and to blow a young hurri921. What animal may yet teach us how to produce light-waves with little...

...constructed for, and we are satisfied. But how wasteful and indirect and empirical is the process. We want a small range of rapid vibrations, and we...up to them. It is as though, in order to sound some littleshrill octave of pipes man or^aa, we were obliged to depress every key and every pedal, and to...

...us, because no other has any effect on our retina ; but we do not know how to produce vibrations at this rate. . . . We want a small range of rapid vibrations,...key and every pedal, and to blow a young hurricane." — LODGE. The production of light by very rapidly alternating currents seems to give promise of success...

...us, because no other has any effect on our retina; but we do not know how to produce vibrations at this rate. . . . We want a small range of rapid vibrations,...obliged to depress every key and every pedal, and in blow a young hurricane." — LODGE. The production of light by very rapidly alternating currents...

...constructed for, and we are satisfied. But how wasteful and indirect and empirical is the process ! We want a small range of rapid vibrations, and we...some little shrill octave of pipes in an organ, we are obliged to depress every key and every pedal, and to blow a young hurricane. I have purposely selected...

...constructed for, and we are satisfied. But how wasteful and indirect and empirical is the process ! We want a small range of rapid vibrations, and we...some little shrill octave of pipes in an organ, we are obliged to depress every key and every pedal, and to blow a young hurricane. I have purposely selected...

...constructed for, and we are satisfied. But how wasteful and indirect and empirical is the process ! We want a small range of rapid vibrations, and we...series leading up to them. It is as though, in order to souud some little shrill octave of pipes in an organ, we are obliged to depress every key and every...

...We will then be no longer in the awkward position thus graphically described by Professor Lodge : " It is as though, in order to sound some little shrill...key and every pedal, and to blow a young hurricane." THE SPECTROSCOPE IN ASTRONOMY. ALMOST every one is familiar with the history of the spectroscope in...